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Merge "disp: msm: add length check for debugfs_ctrl"

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qctecmdr 2019-08-30 20:06:42 -07:00 committed by Gerrit - the friendly Code Review server
commit dc7e1224cc
1 changed files with 3 additions and 0 deletions
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msm/sde_dbg.c
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@ -3754,6 +3754,9 @@ static ssize_t sde_dbg_ctrl_read(struct file *file, char __user *buff,
pr_debug("%s: ctrl:0x%x len:0x%zx\n",
__func__, sde_dbg_base.debugfs_ctrl, len);
if (len < 0 || len >= sizeof(buf))
return 0;
if ((count < sizeof(buf)) || copy_to_user(buff, buf, len)) {
pr_err("error copying the buffer! count:0x%zx\n", count);
return -EFAULT;